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Mass Transfer

Mass Transfer
When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

Forced
Induced
None of these
Natural

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Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

91.5
99
95
90

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Mass Transfer
In liquid extraction, if the selectivity is unity, then

No separation will occur
Separation of the constituents is the most effective
Amount of solvent required will be minimum
Solvent flow rate should be very low

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Alkalis
Nitric acid
Hydrochloric acid
Sulphuric acid

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Mass Transfer
Which of the following is a suitable absorbent for removal of H₂S from natural gas?

Vetrocoke solution
Dilute
Hot water
Monoethanol amine (MEA)

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Mass Transfer
Weeping in a distillation column

Increases tray efficiency
Results due to very low gas velocity
Provides large interfacial surface for mass transfer
Results due to very high gas velocity

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